External BB
PT-6628S
For Shimano BB R60
Compatible with BC1.37" * 24T frame
Width: 68mm
Weight: 92g
Bearings: Sealed cartridge bearings 37 * 7 (R451)
Material: Forged & CNC machined AL6061 cups
AL6061 shell w/ double o-ring seals
Finish: Anodized color available
Option PT-6628SCB Ceramic bearings
PT-6628S Drawing download